F# SQLProvider 错误 FS0039：类型“dataContext”未定义字段、构造函数或成员“test”在演示中

如何解决F# SQLProvider 错误 FS0039：类型“dataContext”未定义字段、构造函数或成员“test”在演示中

演示在这里https://fsprojects.github.io/SQLProvider/core/mysql.html

type sql = sqlDataProvider<
                dbvendor,connString,ResolutionPath = resPath,IndividualsAmount = indivAmount,USEOptionTypes = uSEOptTypes,Owner = "HR"
            >
let ctx = sql.GetDataContext()

let employees = 
    ctx.Hr.Employees 
    |> Seq.map (fun e -> e.ColumnValues |> Seq.toList)
    |> Seq.toList